Mount Redoubt’s eruption 30 years ago changed how we monitor volcanoes around the world

Updated: December 7, 2019Mount Redoubt west of Kenai erupts an ash cloud on April 21, 1990, during the same unrest that launched the fledgling Alaska Volcano Observatory .

On that December morning 30 years ago, volcanic ash from Mount Redoubt melted inside all four jet engines of that 747. The ash cooled, coating the engines with glass and restricting air flow. The engines responded by shutting down. All 231 passengers aboard reported no injuries. But some vowed never to fly again, after the next available set of planes carried them home.

An immediate beneficiary of the flight’s near miss was the fledgling Alaska Volcano Observatory, formed a year before to help monitor the dozens of volcanoes in Alaska. The observatory is a team of scientists from the U.S. Geological Survey, UAF’s Geophysical Institute and the Alaska Division of Geological and Geophysical Surveys.

Thirty years ago, Power was one of the first employees of the observatory, working in Fairbanks at the Geophysical Institute. He was among several people who noticed Redoubt shaking with dozens of small earthquakes in the days before the eruption.

Alaska Volcano Pilot Casadevall Anchorage Engines Eruption Power Aircraft Observatory World Cloud Engine Way Today Co-Pilot Plane Geological Flight Jet Warning Life Redoubt Volcanoes

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